Proof-of-Work (PoW) is a measure of using computational power to create and verify the cryptographically secure blockchain. This is similar to traditional Bitcoin mining. PoW mining is described in more detail here.

If you are an online merchant, there are some payment processors listed on the Decred website which can help you accept Decred payments. Some of these payment processors can also provide integration with major e-commerce platforms.

An alternative way to obtain Decred is to use your skills, knowledge, or experience by exchanging services for Decred as payment. Services can be anything that you are skilled at which are in need or requested by other members of the Decred community.